Catch basin



FIG. 1 is an exploded top perspective view of a catch basin embodying my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is an exploded top perspective view of a second embodiment of a catch basin showing my new design; and

FIG. 4 is a bottom perspective view thereof. 

The ornamental design for a catch basin, as shown and described. 